Flushing-valve.



G. A. BROWN. FLUSHING VALVE. APPLICATION FILED MMM, 1911.

Patented Nov. 12, 1912.

Fla 1 IIIA. .1.

NVENTOR. f

WITNESSES:

\ ATTHRNEY. f

Aa specication.

UNITED- sTATEs 4iallaivt OFFICE.

encuen a.` BROWN, or rrr'rsnUnGH, PENNSYLVANIA.

FLUsHINe-VALV'E. I

Spec'cation of Letters Patent. Patented Nov. 12, 19192.

application mea laren s, 1911. semi 1n.l 613,097.

.To all whom it may concern:

Be it known that I, GEORGE A. BRowN, a citizen of the United States', residing at Pittsburgh, Pennsylvania, have invented certain new and useful Improvements in Flushing-Valves, of which the following is My invention relates to valves and is herein illustrated as designed for flushing water closets.

This invention is an improvement on the device of my Patent No. 913,097, of Febru- `ary 23, 1909, and its primary object is to provide against interference with the automatic operation of the valve by manipulating the opening handle more than once.

Other objects are to improve the general `v operation as will be hereinafterv described.

In the accompanying drawings Figure 1 is a vertical central section through the valve and casing; Fig. 2 is a horizontal section on line (II) in Fig. 1; and Fig. 3 is a similar section on line (III) of Fig. 1.

which is closed by a cap having a downwardly projecting hollow guide stem 8 made nearly as large 4as the casing itself. On the stem 8 I the main valve 9 fits neatly and the casing is provided with two seats, 10 and 11, to receive the valve 9. The lower end of' the valve is closed except for an opening 12 through which loosely passes the stem 13 having a relief valve 14, and being guided in a spider 15, to reciprocate vertically..

Loosely riding on stem 13 is a collarl attached-by- `a link to the arm 17 mounted on sha-ft 18 of the operating handle 19. Also attached to sleeve 16 is a pivoted dog 20 which in .its lower -position rests on a lug20, and engages in a notch 13 in the stem 13. The-raising ofthe collar 16 therefore carries upward the stem by engagement of the. dog 20 until the valve is completely opened byfirst lifting relief valvev 14 against `the vtension ofv spring 21, and then raising the main valve y9. The dog 20 eventually strikes the lug 27 and thereupon is released' from the stem 13, after which it will be 0bserved that no manipulation of the handle will further disturb the action of the valve and `its stem.

The main valve 9 is provided with inlaid gaskets 22 and 23 to engage the seatsl 11 and 10 respectively, and it is to be observed that it is almost as large as the casing surrounding it.l The object of this is toprevent lifting the main valve by upward pressure as on flange 9a, as soon as the pressure inside the valve is relieved through the opening of 14. As the main valve rises it will drive out air'and water through the passage 24 at the top of the hollow guidelstem 8. This escapement is governed by the needle 25 in the cap, so that the rate of movement of the main valve can be regulated. After the valve has risen, the water pressure on top passing up between the top of the main valve and the casing 7 will partly equalize the pressure under thevalve'and thereafter by some of it passing in through the passage '24, the weight'will cause the valve automati-l cally to close.- In closing, however,v the .valve cannot shut suddenly both because its lower seat will cut off 'the outlet (which. is larger than the inlet) and because any tendency to move downward faster' than the water can enter at 24l will be resisted by the suction effect of the valve on its stem.

In the operation of the' valve `it is to be noted that after it is openedthle chamber marked B will become partially empty because its outlet is greater than its, inlet, and

also that the chambers A and C will contain air .and the Iinside of the valve will also contain air, That is, .in all of its movementsl the valve is subjected to an air cushion, and when it finally closes there will be an air cushion ,in chamber B to prevent water hammer. The advantages of having the opening means engage thefl valve stem only at the proper position, will be obvious,

since it prevents too much ushing andv prevents interference'A with the Vvalves automatic movement. y

Having thus-described my invention and illustrated its use, what I claim as new and desire to,A secure by following:

1. A water closet flushing valve provided with' a hand device for positively openingl the valve, and means to release the valveVA Letters Patent, is the' therefrom after rising and to positively andA means to prevent such engagement at any position except When the valve is closed, substantially as described.

'3. A high pressure ilushing .valve forV Water closets having means to retard its movement by fluid escapement, combined with a hand `operated device to ositively open the valve, and means to re ease the opening device only when the valve is entirely open and to rengage the valve only when it is entirely closed.

4. The combination with a liigh pressure valve having a pilot release valve, of an operating handle for both valves and an engaging connection between the valves and a handle arranged to release only when the valve is at one limit of its travel, and positively prevented from rengagement until the valve returns to the other limit of its travel.

In testimony whereof I have hereunto 'signed my name in the presence of the two subscribing witnesses.

GE,O..A. BROWN.

Witnesses:

MINNIE BROWN, HENRY J. DAVIS. 

